This is a photograph showing how the sound is made on a vinyl record. The needle is made to vibrate as it runs along the grooves. The more wobbly the line, the higher the pitch of the sound. It was a great system, and vinyl is still favoured by many for the distinct tone it gives. This portion of the record is about 1mm long, so a split second of sound is all that is shown here. Thanks to Thor Haugen for the idea (and the record). It’s a pointer sisters track, by the way, I wonder which bit?
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